Amtivo Group Acquires International Standards Authority, Inc. (ISA)

Amtivo Group Acquires Quality Systems Registrars

October 18, 2024

Professional Services

Amtivo Group has acquired Quality Systems Registrars (QSR), a US-based ANAB‑accredited certification body, to strengthen Amtivo's presence and capabilities in the United States. The deal expands Amtivo's sector expertise (notably aerospace and chemical Responsible Care) and brings QSR's client network and standards experience into the Amtivo platform.

Audax Strategic Capital Invests Growth Equity in Amtivo

September 4, 2024

Professional Services

Audax Strategic Capital (ASC) has made a common-equity growth investment in Amtivo, a London-based global B2B provider of accredited certification, training and assurance services that is a portfolio company of Charterhouse Capital Partners. The capital will support Amtivo’s future M&A activity and help fund geographic and potential product-line expansion; terms were not disclosed.

Charterhouse Capital Partners Acquires Majority Stake in Amtivo

July 4, 2022

Professional Services

Charterhouse Capital Partners has entered into an agreement to invest in Amtivo, a London-headquartered provider of accredited certification, training and technology-enabled services. Charterhouse is acquiring Amtivo from August Equity (which will retain a minority stake), and will work with management to drive organic growth and continue an acquisition-led expansion strategy.

ATIS (Thompson Street-backed) Acquires Technical Inspection Agency USA (TIA USA)

September 15, 2025

Professional Services

ATIS, a St. Louis-based provider of elevator and escalator inspections and consulting (backed by Thompson Street Capital Partners), has acquired Technical Inspection Agency USA (TIA USA), a Las Vegas–headquartered provider of vertical transportation inspections and consulting serving Nevada and Arizona. The deal expands ATIS’ national footprint and technical capabilities in complex vertical transportation systems; terms were not disclosed.

Tailwind Capital Acquires International Sports Sciences Association (ISSA)

March 1, 2021

Education

Tailwind Capital has acquired the International Sports Sciences Association (ISSA) from the BERKS Group. The deal will enable Tailwind to invest in ISSA's next-generation technology platform, proprietary content, and strategic acquisitions to expand its eLearning leadership in the fitness and wellness industry.

HawkEye 360 Acquires Innovative Signal Analysis (ISA)

December 18, 2025

Aerospace & Defense

HawkEye 360 has acquired Innovative Signal Analysis (ISA), a Dallas-area provider of advanced signal-processing technologies, to integrate ISA's algorithms, edge and cloud processing solutions, and engineering expertise into HawkEye 360's RF signals-intelligence platform. ISA will operate as a subsidiary and the acquisition is intended to accelerate HawkEye 360's processing capabilities and expand detection, automation, and mission support for defense, government, and international partners.